Demountable rim for wheels.



A. M. DOERFLER.

DEMOUNTABLE RiM FOR WHEELS.`A

APPLIQATION FILED IUMEZ. 1916.

1,270,022; I -PamtedJune18,'-1918.

- zsuzzTs-SHEET'L' A. M. DOERFLER. DEMouNI/IBLE mM FOR WHEELS.

APPLICATION FILED IUNEZ, I9I6.

11,270,022@ PatentedJune18,191&

2 SHEETS-SHEET z.

of the demountable rim plied'to a wheel and tire Fig. 1.

ALFRED M. DERFLER, 0F MEDFORD, MASSACHUSETTS.

DEMOUNTAIBLE BIM FOR WHEELS.

Speeication of Letters Patent.'

Patented June 1s, 1918.

Application led J' une 2, 1916. Serial N o. 101,400.

To all whom it may concern.'

Be it known that I, ALFRED M. Dommage, of Medford, in the county of Middlesex and State of Massachusetts, a citizen of the United States, have invented a new and usemprovement in Demountablev Rims for eels, of which the following is a full,

clear, and exact description, reference being had to the accompanying drawings, 'forming' a part of this specification, in explaining its nature.

The present invention relates to improve-- ments 1n demountable rims for wheels and especially to wheels having aquick detachable tire. A

Among the objects of my invention is to provide whereby the tire may be quickly and easily applied tothe deniountable rim or removed from it and like facility be obtained in applying the demountable rim to the wheel or fixed rim or removing it therefrom; to provide a demountable the separate parts are held together without bolts, nuts or like fastenings; to provide whereby the rastenings for the separate parts are socketed within the fixed rim and reinforced and held by it; to provide a structure that will not rattle, creak or shake loose and in which, also, wear may be taken up; to provide a compact structure in which the demountable rim may it snugly over the fixed rim, and essentially to provide a structure in which the tire will be securely held on the demountable rim and the demountable rim .also securely ixed` to the fixed rim, the jointed engagement of all the parts being such as to be self-tightening so as to obtain a tight and proper union between them at all times.

My invention can best be seen and understood by reference to the drawings in which I have shown an embodiment thereof apof a common type and in which` A Figure 1 is a view in side elevation of the structure.

Fig. 2 is a section on the line 2-2 of Fi 1.

Fig. 3 is a section on the line 3 3 of Fig. Fig. 3.

Fig. 5 is a plan of the under side of the rim of the tire.

Fig. 6 is also a plan of the under side of thedemountable run having applied to it a 4 is a section on the line 4-4 of locking device to which split rim in whichbe made.

Referring to the drawings 1 represents the body of the wheel having an ordinary wooden felly 2 to which the spokes are secured and which is faced with a lixed annular metal rim 3.

4e' represents the shoe or 5 is the demountable rim which is provided with the usual flanged edges 6 which embace the tire for holding it securely in p ace.

The'rim 5 of the shoe or tire is split longitudine y comprising, in other words, separate parts or sections 7 and 8, respectively. These sections are substantially identical and oppositely disposed. The inner edge .of one of the sections 7 is provided with an annular V or wedge-shaped projection 9 and the inner edge of the section 8 with a corresponding' V or wedge-shaped socket 10 into which the projection 9 tits when the two parts or sections are brought together to embrace and hold the tire, the socketing of the projection 9 in the other part or section acting to center the two sections in proper position with relation to one another and to the tire.

The parts 7 and 8 of the demoantable rim are each provided on the inner side or face thereof with raised pieces 11 which coperate with one another to form a series of spaced raised but relatively thin Wedgeshaped cleats. These cleats are arranged on the inside lof the rim of the tire and lie preferably equidistant from one another. The side edges 13 of the cleats are inclined inwardly.

Adapted to fit over each of the respective c eats are corresponding wedge-shaped caps l5. These caps are made of relatively thin or sheet metal and comprise a flat wedgeshaped body portion provided with flanged edge portions 17 running from the base of each cap to the apex. The flanged edges 17 of the caps are inwardly inclined and have, in other words, substantially the same inclination as the side edges of the cleats. The caps t upon the cleats with a drawing enpneumatic tire.

gagement, the application oi' the caps tendlug to exert lateral pressure or draft upon the separate pieces comprising the cleats, thereby drawing them together and with them the two arts or sections of the demountable rim ihr holding the tire.

On account of the inclination of the sides of the cleats and likewise of the caps, the caps are enabled to have interlocking engagement with the cleats as against displacement in radial direction.

Formed within a series of raised or Jthickened portions 18 of the fixed rim 3 of the wheel are a like series of V-sha-ped, relatively shallow sockets 19 having inclined or beveled side edges like the caps which lit within these sockets. The raised ortions 18 are formed on the outer side or ace of the rim, and accordingly the sockets formed within them are sockets raised above the normal peripheral face of the rim. The sockets 19 extend circumferentially around the rim 3; they correspond in number with the cleats on the demountable rim and are spaced equidistant from one another, the spacing corresponding with the spacing between the cleats. ln other words, the spaced relationship between the cleats, and sockets isl such that after the caps have been applied to the cleats the demountable rim and tire carried by it may be applied by axial movement to the fixed rim of the wheel, the cleats and caps thereon then passing in the space between the socketforming portions 19 of the wheel rim. After the cleats and caps have been moved to a position in alinement with the sockets, then by turning the demountable rim circumferentially with relation to the fixed rim the cleats with the caps upon them will turn into and become fixed within the wedge-shaped sockets. The fixed rim, with the caps thus socketed, will act to hold the caps in place and also reinforce them in their retention of the separate parts of the demountable rim. The fixed rim will also act to hold the demountable rim securely against both lateral and radial displacement and also against circumferential displacement in one direction. lfn order that all the cleats with the caps thereon may fit properly within the sockets of the xed rim, the relative spacing of the cleats and sockets should be accurately obtained and all of the caps should be properly applied to the cleats. In practice the proper application of any cap to a cleat is indicated by the cap being drawn or forced onto the cleat until the base portion of the cap is in alinement with the base portion of the cleat.

In connection with the socketing of the cleats and caps the direction in which the sockets point is such that after the demountable rim has been applied tothe fixed rim of the wheel the draft exerted upon the wheel, as the vehicle to which the wheel is attached moves in a forward direction, will tend to force the cleats and caps into their respective sockets on the fixed rim. That is, durin the ordinary movement of the vehicle to w ich the wheel is applied the forces are such as to make the cleats and caps tighten into their respective sockets, thereby constantly acting to take up any lost motion in the 4 various joints and eliminate all creaking or rattling. Any tendency to displacement would occur only as the wheel was moved in a reverse direction as by the backing of the vehicle. Such displacement is prevented and the demountable rim is locked upon the fixed rim against circumferential displacement in both directions by means of a` locking device 20. This is secured to the felly of the wheel by a bolt 21 extending through the felly and secured by a nut 22. Fastened to this bolt at one end is a fixture 23 carrying a linger or key 24 which extends into a slot 25 extending through one of the raised socket-forming portions 18 ofthe wheel rim and also through the side walls of the cap and through the cleat contained within this socket, the parts being fashioned to receive the locking finger or key.

The manner of attaching a tire to a Wheel and removing it therefrom is as follows In applying the tire to a wheel the Sectional parts 7 and .8 of the demountable rim are first applied to the opposite sides of the tire and in such manner that the raised pieces 11 of the respective parts may prop erly cooperate with one another to form the series of cleats. The locking caps are then applied to the cleats, being forced thereon in" any suitable manner. The demountable rim is then applied axially to the-fixed rim of the wheel as before explained and the parts turned circumferentially with relation to one another until the cleats with the caps thereon fit properly within. their respective sockets on thel fixed rim of the wheeh The locking device 2O is then ,applied to the wheel by passing the bolt 21 through the felly of the wheel and the finger or key 24e into the socket made to receive it, after which the locking device is secured in place by applying the nut 22 to the end of the bolt and tightening the same against the felly of the wheel.

The removal of the tire and rim carrying the same is obtained simply by a reverse op eration, the nut 22 first being removed from the locking device, which may then be with-v drawn from the wheel. Then by a relative circumferential movement between the demountable and xed rims the cleats with the caps thereon may be moved out of their respective sockets to a position where the detachable rim with the tire thereon may be withdrawn simply by anvaxial movement.

Owing to the fact that in obtaining the attachment and detachment of the demount able Vrim to and from the fixed rim a relative circumferential movement must be obtained, some provision must be made for the neck 26 of the valve of the tire which ordinarily extends through the demountable rim and also through the xed rim and felly of the wheel when the demountable rim Lfd @aveces in place. To provide accordingly ier such relative circumferential mevement lietween the parte and also for the taking ecce cf the neck of the valve ely-slet 2'? is crme the fixed rim of the Wlieei emi elly there-.

Ere used in 'wheels of n di'eient type.

Having thus fully described my inventien, l' claim anu desire to secure ivy Lettecs ljetent ci the United Ltaesz-fi.. A demcuntable wheel rim hei/ing pests sepaieted by e split in seid eine, eecli ci" sei pei-ts having upcn it pieces cogieietin with @ne another tc form e weilge sliep cleat and e Wedge shaped cap ttiug eve? seid cleat for uniting the seperate pieces thereci theeby holding together the sepercte puits ci: the rim,

A ciemounteble wheel having sepeete parte, each having 'upon it pieces ccper ating with one another te ferm e sc'ieso sence-51g Wegesheped elects9 and Wedgeeel caps iittin over seid cleats im' unitsepci'ete pieces therecf with e. mw-

- ci the rim.

is demeuntable wheei split icngiineily inte separate parte, eech peet 'new upon it cleatcrming memlzese cepecticn and holding tcgetlier the seperatev ating with one another to fome series of' relatively thin wedge-shaped cleats, and weaigectaepe, enged plates capping said cleats fici uniting the separate pieces there# ci licking/together the seperate parts ci? the sim.

A clemennteble wheel rim having sepeete cette, each having upon it pieces coepemting Witiiene another te fom c. series ci' spaced, Weige-sheped cleats, en Wedgesliepecl7 lenged'caps clrewn over said cleats, uniting the seperate pieces thereof and havingen inte'flcciing engagement with the cleats. es cgeinst displacement in a, radial diecticn.

5d A denicunteiile wheel rim split longituiinelly inte sepemte parts, each of said parts leaving apen it rejecting pieces copemting with ene enet er teform e series of ceietively thin.; at, wedge-shaped cleats havin intmne side edges, and wedge Shep ceps ci thin metal having inturned side edges drawn ever seid cleats.

6. ciemeunteble Wheel rim spllbtllmgituiiineilw inte separate pests, seid; pants presenting meeting eclges having a self-centering engagement with one another as the edges ci the respective parts are drawn tegetlieig each ci scid parts having upon it raised pieces cffipereting With one another te ferm e sexies ci spaced, Wedgeslueped clem-is9 neige-shaped caps ravin ever cleets ALFRED M, DERFLER. 

